英语词汇“Appleton layer”的中英文释义、用法、翻译及短语词组-英汉翻译词典

单词	Appleton layer
释义	Appleton layer 英?[??plt?n ?lei?] 美?[??p?lt?n ?le?] 释义阿普顿层英英释义 Noun 1. the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission
随便看	silica based packing material silica based polymeric support silica-based polymeric support silica-baseds silica based support silica-based support silica-based waveguides silica base microgel grease silica base sand silica basin silica-bearing material silica-bearing thermal water silica belt silica black silica block silica boat silica-bonded casting investment silica bonded casting investment silica-bonded investment silica bonded investment silica brick silica-brick silica brick checkers regenerator silica-brick checkers regenerator silica brick, dinas brick

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Appleton layer